/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
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****************************************************************************/

#pragma once

#include <QObject>
#include <QList>

#include "widgetpluginpath.h"


QT_BEGIN_NAMESPACE
class QString;
class QAbstractItemModel;
QT_END_NAMESPACE

namespace QmlDesigner {

class IWidgetPlugin;

namespace Internal {

// PluginManager: Loads the plugin libraries on demand "as lazy as
// possible", that is, directories are scanned and
// instances are created only when  instances() is called.

class WidgetPluginManager
{
    Q_DISABLE_COPY(WidgetPluginManager)
    typedef QList<WidgetPluginPath> PluginPathList;
public:
    typedef QList<IWidgetPlugin *> IWidgetPluginList;

    WidgetPluginManager();

    bool addPath(const QString &path);

    IWidgetPluginList instances();

    // Convenience to create a model for an "About Plugins"
    // dialog. Forces plugin initialization.
    QAbstractItemModel *createModel(QObject *parent = 0);

private:
    PluginPathList m_paths;
};

} // namespace Internal
} // namespace QmlDesigner
